NATS 1750 Lecture Notes - Lecture 13: Mobile Agent, Sea Spray, Mass Wasting
30 Dec 2019
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Document Summary
Processes that break down rock originate from internal forces that shape the rock and its structure. Processes that break down rock are mostly driven by the heat of the interior. There are also exterior forces that play a role in shaping the earth and are related to the. Weathering = the disintegration and decomposition of material at or near the surface. Mass wasting = the transfer of rock material downslope under the influence of gravity production of sedimentary rock. Erosion = the incorporation and transportation of material by a mobile agent (usually water, wind, or ice) Mechanical weathering: is the breaking down of rocks into smaller pieces. Lenses of ice grow larger as they attract liquid water from surrounding areas. Water works its way into cracks in rocks and the freezing enlarges the cracks in the rocks. Sea spray or salty groundwater penetrates crevices and pore spaces in rocks. As the water evaporates, salt crystals form and enlarge the crevices.
